Rust nPM1300 PMIC Driver

A no_std, async Rust driver for the Nordic nPM1300 Power Management IC (PMIC).
This crate provides both low-level register access and a high-level API for managing PMIC functions.

Features

• no_std support for embedded environments
• Async design
• Type-safe register access
• defmt support for logging (optional)
• Generated low-level API using device-driver
• Minimal dependencies

API Coverage

Important

The driver is currently under development, and the API may change before reaching 1.0.

Component	Low-Level API	High-Level API
SYSREG — System regulator	✅	✅
CHARGER — Battery charger	✅	✅
BUCK — Buck regulators	✅	✅
LOADSW/LDO — Load switches/LDO regulators	❌	❌
LEDDRV — LED drivers	✅	✅
GPIO — General-purpose I/O	✅	✅
ADC - System Monitor	✅	⚠️
POF - Power-fail comparator	✅	✅
TIMER — Timer/monitor	❌	❌
Ship and hibernate modes	✅	✅
Event and interrupt	❌	❌
Reset and error	❌	❌
Fuel gauge	❌	❌

Legend:

• ✅ Fully implemented (at least should be)
• ⚠️ Implemented but has known issues (see Issues)
• ❌ Not yet implemented

Warning

While core functionality has been tested, this driver is not yet production-ready. Contributions and bug reports are welcome!

Note

This crate is async-only and there are no plans to add synchronous APIs. Contributions are welcome!

Usage Example

Here's a minimal example using the Embassy framework on an nRF52840:

#![no_std]
#![no_main]

use embassy_executor::Spawner;
use embassy_nrf::{
    bind_interrupts,
    peripherals,
    twim::{self, Twim},
};
use {defmt_rtt as _, panic_probe as _};

use npm1300_rs::{
    types::BuckVoltage,
    NPM1300,
};

bind_interrupts!(struct Irqs {
    SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0 => twim::InterruptHandler<peripherals::TWISPI0>;
});

#[embassy_executor::main]
async fn main(_spawner: Spawner) {
    let p = embassy_nrf::init(Default::default());
    let config = twim::Config::default();

    let twi = Twim::new(p.TWISPI0, Irqs, p.P0_07, p.P0_12, config);

    let mut npm1300 = NPM1300::new(twi);
    let _ = npm1300.set_buck2_normal_voltage(BuckVoltage::V1_8).await;
    let _ = npm1300.enable_buck2().await;
}

More examples can be found in the examples directory.

Support

• GitHub Issues - Bug reports, feature requests, and questions

License

Licensed under either of:

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT License (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contributing

We welcome contributions! Please:

1. Fork the repository
2. Create a feature branch
3. Follow conventional commits for commit messages
4. Submit a Pull Request

By contributing, you agree that your work will be dual-licensed as above, without additional terms or conditions.